Excerpted from wiki:
..."He's had an enormous impact," says Michael Geist, the Canadian research chair in Internet and e-commerce law at the University of Ottawa. "In a sense, he's got the mechanics of how we deal with online hate up and running. It's fair to say no one has been as effective or persistent." The result is a body of jurisprudence that leaves little doubt Canadian law applies to online hate speech that originates in this country. The decisions, says Geist, "have sent a clear warning to those who engage in hate speech that this is not a no-law land."
another excerpt:
Blogger and former magazine publisher Ezra Levant, who is being sued by Warman and others for libel, has argued that Warman's actions as a plaintiff before the Canadian Human Rights Commissions are tantamount to censorship in the name of human rights.[56] Levant also says the Warman's libel lawsuits generally are "nuisance suit[s]" that are part of Warman's "maximum disruption" policy.[57] Maclean's, which had been the subject of an unrelated human rights complaint concerning hate speech, has reported that "Richard Warman says he's fighting hate. Critics say free speech is the real victim." That article included commentary or allegations that ...[T]he slam-dunk quality to Warman's Section 13 cases are a cause for worry, symbolizing the drift of human rights commissions into the boggy territory of covert investigation and speech control.
Stifling dissent (speech) is a Human Rights Violation in itself.